Concrete-block machine



F. E. KINSMILLER CONCRETE BLOCK MACHINE Filed June 10, 1921 heets-Sheet 1 H mm DNN

I l llllll F. E. KlNSMiLLER CONCRETE BLOCK MACHINE Filed June 10, 1921 4 h she 2 NEE F. E. KINSMILLER CONCRETE BLOCK MACHINE;

, 1921 4 Sheets-,Sheet 3 Filed June 10 Feb. 17.1925.

F. E. .KINSMILLER CONCRETE BLOCK MACHINE Filed June 10. 1921 4 e e 4 ffm'cflfom Fraderzkk Km; mf/Zer i713 Fffo rvey.

Patented F eb. 17, 1925.

urmirr so ATE-S.-

FREDERICK n; iiinsmi ntnit,

l PATENT ore!" or BRAINERD, iiirnnnsomi.

schemes-stool; miioiimii.

Application file'd time 10;

To all whom itmiqz concern:

Be it known that I, FREDERICK E. KINs termini. a citizen of the United States; re siding" at Brainerd, in the oounty of Crow Wing and State of Minnesota, have invented;

vide means whereby the side Walls and core of the block will be easily Withdrawn and removed to permittheblook to rest upon the pallet hoard intact Without rotating or otherwise disturbing the position ofthe p0rtions of the block after the same'hevebeen cast.

Another object of the invention is to proride the core of the inaehinewith a central portion adapted to he FELISQCl vertlcally from the block and with end portions adapted to he swung outwardly With the-sides 'or the and Wells of the mold soes to leave the hlool: free from the cores upon the pallet A still further object istopivot the side walls of the mold below the lowermost por tions thereof so that when said wallsswing outimrdly thesame do noteai setheedges or corners of the block to adhere'thereto and so deface the surface of theqbl'ock;

Another object of the invention is to proride means for holdin the anchors ein ployed Within the lolock in proper 'posi-- tion. said means being yieldable to permit the reh'iovwl of thecore members of thetfma- (chine without disturbing the position of said :mrhorefter the block hes been cast. itnother object is to provide means for adjustzihl supporting the pallet Within the mold proper. V

Astill further objeotis to provide a mum her of sockets positioned along. the po friphsr of the mold walls which are adapted to receive and hold division plates capable of being positioned Within the mold to sepmrzito the same into smaller sections whereby smaller sized blocks may he formed.

Concrete block two of the mold Walls s 1921; seharm. 476x603.

,ing means. for the mold Walls fwh'eieby t tvo side Walls endan end wall maybe siiiiultaneously leaked from movement in an out-- Ward direction;

The full objects encl advtrnteges oit "my invention willappear in coi station with the detailed description thereof *ztntl'a'i-e petrtie'ula'rly pointed out in th'eeliiiiiis;

In the drawings, illustrating tliee pplioation of my ii' 'venti'on in oneiorni Fig.1 is a side elevetioii'al viereofmy improved invention with the mold box closed wndth'e parts positione'dieady to receive the concrete ingredients.

Fig. is front elevations] View ()Tl: the

iiiaoliino shown in l igiii'e 1.

Fig. 3 is View similar-toFigure lofa portion ofthe dei iee shown "therein i vltli the mold Walls swung awayfrom the hlook and the central ooi'emiefiibe'r partially re- Fig. .is aVie-W simil'ir to FigLi-reQWith 1mg outwardly and With the 'oentrzil core member partially the same in relation to the bleak anchors.

lmi'oh ne with i Fig: iss plan view oithe parts errztnged as shown in with a block positioned Withill the same.

Fig. His 9. seetionahview tskenmn line 6-6 of Figure 5. V

Fig. 7 is an enlztietl-clth1lView :ot a

portion oithe zinc-hot holding deviee shown shown in Figure 8.

Fig. 10 is a plain View of my improved :hloolr machine slioir-lng ii corner block 'benig 'it'ornied Within the same.

Fig. 11 is a View similnrto Figure 10 showing the device forformingztoliiznney block.

Fig. 12 is an elevational View of one of the division members used in connection with my concrete block ]1'32l-Ci'l11'](,.

Fig. 13 1S a plan View ot the machine showing the divisioniheinber in Figure 12 position-ed Within the-same.

Flg.l-iis a seotional :l'rugmentm r View taken on line 14.l l of Figure 13. A still turtherobjeot is to. p1'"o viclelook Figs 15 "is i an relevationalview of a. ilongitudinal division member similar to that shown 1n Figure 12.

Fig. 16 is a plan view similar to Flgure 13 showing the application of the division member indicated in Figure 15 positioned within the same.

My invention is arranged to contruct con crete blocks which have a complete air space extending longitudinally through the block so that the block is divided into two separate portions, a front face and a rear face which are connected together by means of a number of steel anchors securely embedded in the two sections. I have found that with this type of block a very high degree of insulation is secured so that buildings constructed therewith are constantly maintained dry and heat is prevented to a large extent from passing through the said walls thereby causing the buildings to be cool in summer and to hold their heat in winter.

My invention, which is best shown in Figure 1, comprises a frame A on which is supported a pallet board B surrounded by a removable mold C. To the rear of mold C is positioned a table D which is carried from the support A which table is so arranged as to hold all of the tools and other devices used in the construction of my improved blocks. These various parts will now be described in detail.

The frame A which is shown in detail in Figures 1, 2, and 3 comprises two standards 20 and 21 which are formed with legs and 23 connected together to form a head portion 24. The two standards: 20 and 21 are connected together at their head portions 24 by means of a table 25 which extends throughout the length of the machine and which is bolted thereto by means of bolts 26. Beneath the table 25 and parallel to the same is provided a longitudinal brace 27 which is bolted to a pair of outwardly extending flanges 28 on the standards 20 and 21 by means of bolts 29. The brace 27 is provided with a pair of upwardly extending brackets 30 best seen in Figure 2, which have a flange 31 by means of which the same may be bolted to the head portion 24 of the said standards 20 and 21 by means of bolts 32. lVith the table 25 extending completely across the standards 20 and 21 and rigidly bolted thereto and with the additional brace 27 and its brackets 30 the whole device may he rigidly connected together to support the mold box and table D in the following manner.

As can best be seen in Figures 2, 3, and G the table 25 is formed along its two sides with a pair of upstanding flange members 33 and 34 which extend throughout the length of the same and are integrally formed therewith. Table 25 is provided with a number of bosses 35 positioned near the ends thereof which bosses are adapted to receive a number of cap screws 36 screw-- able therethrough and arranged to project a short distance above the level of the said table. Upon. the upper projecting ends of the cap screws 36 are positioned two bars 37 which extend transversely across the table and which have socketed holes 35 formed in the underside thereof in which said bars are seated and held in position upon the cap screws 36. Pallet board B, previously referred to may be made of wood having a flat top with a pair of battens 40 positioned below the same for use in holding top 39 together and for positioning the same away from the surface on which they rest during curing, to permit of circulation of air around the block. This pallet board B is adapted to rest on the bars 37 which lie adjacent the two battens 40. The table is formed with two openings -l1 and 42 extending through the same through which the two said battens are adapted to project. As will be noted in Figure 6 these holes or openings ill and 42 are made of such a size as to accommodate battens of varying thictness, said openings extending completeli' across the table to the flange members 3-? and 3-4 so that ii desired the battensmay be made the full width of the top 39. In posi tioning the pallet board B within the dcvi e the battens are so attached to the top 39 that the same come close to the bars 37. The width of the top 39 is further made such that it just tits in between the two flanges 33 and 34 as clearly shown in Figure 3. It can hence be clearly comprehended that the pallet board B can be conveniently dropped in place upon its support within the machine the same being automatically guided by the flanges 33 and 34 and the bars 53? into its proper position to receive the block after the same has been cast.

The mold C which casts the exterior walls of my improved block comprises four plates or walls 43, 44, 45, and 46 which are all adapted to be hinged to the machine proper below the lower edges thereof and which may swing completely away from the block as shown in Figure 3 or may be raised upwardly and connected together to form a mold for the block as clearly shown in Figures 2 and 5. For hingedly connecting front and rear walls 43 and 45 to the machine proper I form the two flanges 33 and 34 of table 25 with four dpending lugs 47 and 48 which extend below the lowermost edge of said table. Pairs of depending arms 49 and 50 are formed on the front and rear walls 43 and 45 of the mold C which extend downwardly from them and are positioned adjacent the lugs 47 and 48 on the flange members 33 and 34. Both the arms 49 and 50 and the lugs 47 and 48 are drilled to receive a pair of pins 51 and 52 which may extend completely across two sets of these unseen '4 lugs and arms to term" a hinged corn'rettion for-the frontand rear walls 50f the mold. It can readily be seen that when these walls are swung outwardly the side walls may take the positions shown in Figure 3 being free from the block and the pallet board B. In a similar manner the end walls 44- and 46 of the mold proper are provided with hook shaped depending arms 53 and 54 which also extend below the lower-most V edges of the same and which are adapted to enter into a number of slots formed in the head portions 24: of'standards 20 and 21 adjacent the end walls of the legs 22 and 23 at 56. Theseend walls and the arms 53 and 54 are similarly drilled to receive pins 57 and 58 which extend completely through both of the end walls 56 oneach oi the standards 21 and 22 and the corresponding arms Stand '53 to hingedly connect said end walls to said Standards. As will be; noted in Figure 2 the position ing Off the hooked arms 53 and 54: is such that a pallet board oil. greater length than that required for themachine may be inserted within the machine without engaging the said arms thereby permitting free operation of themachine and at the same time permitting a certain amount of irregularity of construction of the pallet boards.

The action oiitlie sides and ends o'f'my improved mold when the same are swung downwardly issuch that the said walls are separated from the block proper without causing the corners or thesurface of said block to adhere thereto. I have made a number of experiments with the positioning of the hinges of thesewalls and have found that when the hinges are positioned near the corners offthesaid walls that the surface of the block or corners or other portions of the same adhere to the walls of the mold when the same are swung outwardly thereby defacing the block. With the hinge positioned a substantial distance below the lowermost corners of the said walls this detect; is entirely eliminated permitting of rapid removal of themold iproper from. the block.

As can be clearly comprehended my machine is adaptedto form a number of diifeiy ent kinds of blocks by merely interchanging and varying the assortment of core members and taco plates provided with thematchine. The machine is, however, particularly adapted to cast blocks having a continuous air space extending through the same, the parts for which will now be described in detail.

Attached to the two end walls lsiand 46 ot the mold box C I provide a air of V-shaped hollow castings 59 and 60 best shown in Figures 5, 6, and 7 which are bolted thereto by means of two! bolts 61 and 62. These castingsare removably attached to the end plates 44 and 46' by means of said bolts and at any time may be removed and replaced 59 "and 60-are formed with converging side walls (53 and with an upper wall 64: and a back 65 through which the aforementioned bolts 61 and 62 pass. When the mold is assembled the castings 59 and 60 take the position shown in Figure 5 the lower edges 66 thereoi"- being positioned on top of the pallet board 13 as clearly shown in Figure 6. By means of the adjusting screw 36 the head of the pallet board B may beraised so that the upper surface thereof comes in contact with "the edges 66 of the castings 5i) and 0 so that leakage in material beneath the same is prevented. In this manner any thickness of pallet board B may be used and it desired eithera steel, cast wire or wood pallet board may be employed the same beingprope-rly adjusted until the upper surface thereof comes in contact with edges 66 of said castings. As can be seen in Figure 5 castings 59 and (30 form the end portions of the core which provides the continual air space extending through the block. The intermediate portion of the core is formed by a casting indicated at 67 in Figure 5. This casting is formed with side walls 68' and a top 69 iiitegrally connected therewith, which top 69 lies flush with the top 64 Off the casting 59 and '60 when the same positioned within the mold. The

side walls 68 are made to form a core of.

greater width across thecenterof the same as indicated at 70 and the "said walls are made so that the same taper from the top to the bottomof thedevice. In conjunction with *the side walls of this casting the same is formed with two guides Hand 72 positioned in a vertical position at the ends of the same thus completely "enclosing the said casting excepting at the bottom thereof. By means of the guides 71 and 72-tl1e casting 67 may be slidably positioned between the castings 59 and 60. The edges of the said guides 71 and 72 being slidablevbetween and lowered relative tothewcastings59 and 60 attached to walls 4:41Ztl1d 46 of-the said mold. For handling casting 67 I provide a U-shaped handle 7 5 adapted to normally lie flush with the upper surface 69 of said casting in a recess 76 formed within the same, said handle being provided with a pair o'tnuts 77 and 78 attached to the lower end ot the same so that when the said handle is raised said nuts engage the lower surby other core members if desired. Castings face of the top 69 causing this section of the core to be raised therewith. It can hence be comprehended that casting 67 can be quickly and easily inserted into or removed from the device.

The operation of the device is very simple. The walls 44 and 46 with castings 59 and (30 attached thereto are swung upwardly to gether with the walls and 53 which are locked in position by a. device which will be later described. This brings casting 57 and 60 into position. shown in Figure 6. With the parts so arranged casting 6'? may he dropped into place between castings 5.) and 60, the guide-ways 71 and 72 being operated between edges 73 of wall 63 of said castings 59 and 60, said guideways passing through notches 7 4 therein. l/Vhen the casting 67 is properly positioned the same forms a. continuous core together wit-h castings 59 and 60 which extends completely across the mold box 0 to divide the same into two distinct compartments. one on each side of the mold. After the parts have been so arranged concrete in a semi-moistened state may be poured into the two compartments and rammed in place, after which the upper surface of the same may be troweled smooth to the level of the core members 59, 60, and 67 and the tops of the walls 43, 44, 45 and 46. At this stage the central core member 67 may be removed by grasping the handle 7 and drawing the entire core member directly upward from the mold proper and completely removing the same. from the ma chine. After unlocking the device the end walls 44 and 46 may be swung outwardly by means of two handles 79 and 80 con nected therewith to take the positions shown in Figure 4. Upon the swinging outwardly of these walls. core members 59 and (i0 follow therewith, due to the convergence of the sides thereof cause the said. core members to withdraw from the mold making a clean surface on the block proper. After these two walls have been swung outwardly walls 43 and 45 may be correspond ingly swung outwardly thereby completely removing the said cores and walls from the block letting the block stand in an isolated and freed position upon the pallet board B as clearly shown in Figure 3. In order to remove the block from the machine it is merely necessary to grasp the pallet board ll at its two ends and lift the same upward from the machine with. the newly formed block positioned thereon and deposit the same at any locality desired. For readily pern'iitting access to the ends of the pallet board 13 the table 25 has been formed with the flange members 34 and 33 extending around the same on two sides only,'thereby leaving openings 81 and 82 in the ends of the device through which openings the lingers may be inserted to engage the underside of said pallet board B. In this manner the board can be easily and conveniently removed as soonv as the block has been formed.

For locking the sides of the mold box G in place I provide a locking bar shown in detail in Figures 8 and 9. This bar, as indicated in its entirety at 83, comprises a central portion 84 having two o'tlf-set end portions and 86. The end portions 85 and 8b are each provided with a notch 87 extending into the same. This notch is adapted to cooperate with a similar notch 88 formed in a lug 89 extending outwardly beyond and connected to the two side walls and of the mold C. As can clearly be seen in Figure 5 the edges of the side members 43 and 45 are formed rabbeted at 89 to form a seat for the edges of the end members 44 and 46. lVhen the various sides and ends of the mold are swung inwardly the said walls are held in proper relation by these rabbeted edges so that a square and perfect formed block is secured in every instance. The locking bar 83 is applied by simply pla Ing the same with the notches 8T co-acting with the notches 88 on lugs 89. This serves to hold the parts in place. The two side walls 43 and 45 being held from outward movement by the said locking bar and from inward movement by direct engagement with the edges of the end walls 44 and 45. In a similar manner the end walls 44 and 46 are held from inward movement by means of the shoulder 89 and from outward movement by direct engagen'zent with the said locking bar 8 3. For unlocking the device it is merely necessary to grasp locking bar 83 by its cen tral portion 84 which is positioned a distance away from the end walls 44 and 4t; to permit of conveniently grasping the same. and to raise said locking bar from its seat within the notches 88 on the 89 and to cmnpletely remove the same from the device. After this has been accomplished the various parts of the mold may be removed and swung outward to completely free the block as before mentioned.

As before described and as can be clearly seen in Figure 3 each of the blocks formed comprises a pair of sections 90 and Sll which are spaced from each other and formed separately therefrom. These sections are held together by means of a number of steel. rod anchors 92 formed with angular bent ends 93 which serve to hold the same within the block and thereby rigidly connecting the two sections 90 and 91 of the block together so that from a structural point of view the block is as sut stantial as if each of the two sections ol the same were cast with integral connecting webs. In this manner a block formed which has continuous air space extending through the same and which still has all he requirements .fiir .strengthi and zri point of pivot at-197 Oftihe; armsitfii-i ch54:

as the case mavrbeti Atnthezapex oft the notches Sivan-d 95. theisame formedflwithlia circular in recess :9 8 adaptech to l receivethe anchors 92 as clearly indicated in Eigurei'. These recesses are sopositionedjthat;when the i. casting 67, 1 is in ,place thejsaid; anchors 92 lie adjacentthe endot; the guide-ways 71 and .72 as shown in section in Figurefi, and int dotted; linesi in .Figure .51 With the edges 96 of slots 9a and95 formed arcuate it can he readily=1inderstood..that. if either Oil the entire end wallswithcastings 59. and 60 mounted,.thereon. are moved.outwardly on their points-wot pivot that thesaid .anchore 92Hand 93 ,areiipermitted to remain within theblockvwhilejthesaidpwalli63 of said castings move away fromrthewsamelto tree" said. anchors. 1 For; i momentarily holding anchorsa92 within theirecessesflsd provide a .springclip 99, which has its endsgilOO and q 191, fonmed etosengageithe said anchors 92 to, hold the same I inuplaceibut to, permit ot' the same being drawn outwardly along the surface 96 10f slots 94;- and-HS tot-permit of 1' the removal iof isai-du anchorsiirom the core members 59, and-.60. :Thexsptingcelip 99 is .mounted; inda lWOOCl block 102 which is driven in bet-ween the wa-l1ss63 otccastings 59 11 1161160 through a1rnopeningvi103; inv ..tlie end 7 wall. thereof. tGlip 99iextendstcom- ,pletelyi through the; .hlocle and may beJse- (lulledpllhflletfigby i meansiof a mail or, screw 104C driven pinto they; samew Vitheniicastings 59 and 60 are bolted to the face platefsAG and 4:4 block 102 is securely heldjin, place and .spri 11g member 99, positioned asishown' in the drawings To. apply oneaofthezianchors, to the device spring member; QQ is grasped-byone of its extreiiieclids w ich is normally positioned asashow n iniEig" 61;? and the same drawn;towardsethe icentemof the casting. ,This draws; the saidespring awayfrom opening; 94: which permits the insertion of the; anchor rodtthereima Upon ze ngithe. prineiithessameiengage the sod as clearly indicatediin conneotio ith the a spring membermml in said gore. Wlmnthe mold is removed the pressi reof the springt iiliupo i either eitheatwhors 12 S SQg -ight them-he; sal'rimistdifitorted and the core removedewithqut displae ng ob dietilr ingiitl ei nes tieii eat-" s id an hb 's within the block proper.

Itidiii i51 itiiyjiiiieieioee that with m inventiohithe entire bloclcniay be rammed illiCLfOiHlQd. and the core and mold members removed without inverting or disturbing the block after the samelhas' beenpositioned upon:the pallet. .Afterithis the entire pallet and block may. be. carefully removed and the block set aside to cure -so that the exact-shape ofthe block as formed in the V moldiis maintaiiied and atthe same time the structure of the concrete is not disturbed to cause the same in any way to disiiitegrate or lose its strength With the anchors as formed the two tions of the block arefi'firmly held together and the block has all the characteristics of a building bloclrformed with integral web members whileat the same time the ous air space.

tiontwith t-he ramiriing and casting of the 7 block together with the supporting of the ckihas all of the advantages of a continucore members Within the mold I employ the table D previously referred to. This table comprises'a top lOo which is supported on two cast-brackets 106 which are provided with flanges 107 by means of which the same may ehe bolted to the standards 20 and'21 bycmeans oflooltsl08; Brackets 106 extend upwardly tLD -CitOWaIdthB rear of themachine so that whenthe top .105 is mounted on the same said top comes substantially flush with the top of the mold box C and is positioned to the rear v of the machine a dis tanceisuflicient to permit of swinging rearwardly the; mold wall 15 to permit the removal of the blocks fromt he machine In thismanne'r the operation of the device is notw hindered ingany ,waygand a place for convenient a 1 i a iAlthoiigh IzhftVQ so! far described mymachine asr forming aiblock with a continuous all theitools is provided which is handy and Within-the mold as in the other .form of the invehtiont .7 In addition .to a this I employ another casting-109 .the,shape of which .is clearly-showman said figure, which casting is; "proyided with a guide 1 10 corresponding tactile guide 711: of casting 67 a which guide issuQsto thelside ofthe coreaswclearly in- .qlicitted-e Axguideaway, 111 formed as indi cated cooperatesmwith the guide .71 so; that whenthe two castings are heldltogether by means iriot showmi inuthe; drawings the :1 same form a continuous core making a right angle.

Guide 110 is formed to cooperate with the guide way 112 which is formed on a casting 113 similar to the casting 59. This casting is somewhat shorter than casting 59 being in all other ways similar therewith and is directly bolted to the face of the mold wall 4:3 to cooperate with the core members 67 and 107. Anchors 92 are supported in the casting 130 in the same manner as in casting 60 or 59 so that when the central core member 67 with the casting 107 attached thereto is removed the walls of the dev'ce may be swung outwardly leaving the block intact upon the pallet board, said block being formed with the angular air space extending completely through the same as required.

For forming a half block or a quarter block I provide a number of division plates which are adapted to be positioned transversely or longitudinally of the device. Two such plates are shown in Figures 15 and 12. Plate 114 which is of uniform thickness and which is provided with over-hanging depending lugs 115 issuing from the upper corners thereof beyond the exterior of the mold box proper is shown in Figure 12. These lugs are adapted to become seated in a pair of socketed projections 116 formed on the exterior of the mold walls +141 and 416. hen the internal core members of the machine are moved this plate may be inserted in 'place thereof to form a solid block with half the normal thickness of the ordinary block. In Figure 16 the use of plate llet is clearly indicated. For removal :of plate 114 from the machine I provide a handle 117 issuing upwardly therefrom by means of which said plate may be grasped and inserted into or lifted out from the mold box.

The device shown in Figure 12 comprises a plate 118 which is provided with a vertical slot 119 extending completely through the same throughout its entire length. This plate is provided with lugs 115 and a handle 117 identical with those shown in Figure Lugs 115 of this plate are adapted, tofbe seated into any pair of a number of socketed projections 120 formed on the upper surfaces of the two mold walls 43 and 45. These sockets are identical with the sockets 116 and serve to support the division plate 118 in either of its quarter position or half'position within the mold so that the; said plate may be inserted to form a block of quarter,

half or three quarters the normal length of the standard sized block. Slot 119 isofsuch a size as to exactly fit over any of the core members 59, 60 or 67 positioned within the mold box C so that the fragmentary block may be made with the continuous air space to correspond to the regular size block. In Figures 13 and 1-1 the exact method of applying this device to the invention can clearly be seen.

In Figure 11, I have shown my improved concrete block machine equipped to cast a chimney block. For this purpose I provide a semi-circular casting 121 which is preferably formed hollow and which is adapted to be bolted to theside 45 of the mold box proper by means of a bolt 125 passing directly through both said members, which bolt is formed with a counter-sunk head so that the same lies flush with the exterior surface of said casting. (lasting 121 is the same height as the wall 41-5 and casts a continuous semicircular groove along one side of the block. When two such blocks as'are indicated at 123 formed by this machine are placed together they form a continuous circular flue and a rectangular exterior.

The advantages of my invention are manifest. An extremely and simple device is provided in which all the building blocks necessary in building construction can be formed. in addition to this the machine forms a block with a continuous air space making the block particularly desirable for buildings where heat and dryness are required. Inasmuch as the blocks are not disturbed after the same have been cast th blocks always remain intact throughout the curing thus providing a block of substantial construction and suitable strength and integrity. The simplicity with which the device operates makes it possible to turn out a great number of blocks a day thus clearly reducing the cost of making the blocks and at the same time making the machine highly etlicient and practical.

in accordance with the patent statutes 1 have described the principles of operation of my invention, together with the apparatus which 1 now consider to represent the best embodiment thereof, but I desire to have it understood that the construction shown is only illustrative and that the in- -vention can be carried out by other means and applied. to uses other than those above set forth within the scope of the followii'ig claims.

I claim 1. A concrete block machine comprising a pair of supporting standards having flanged legs a table secured to said legs, a pair of flanges extending along said table, a mold comprising side and end walls positioned above said table, a pair of lugs formed on each of said table flanges, a pair of arms formed on each of said mold sides and pivoted to said lugs, slots formed in said legs adjacent the flanges thereof, and depending arms formed on said mold ends extending downwardly into said slots and along said leg flanges and means for pivoting said arms to said leg flanges.

2. A. concrete block machine comprising a mold having a support, side and end Walls hingedly connected to said support, core members mounted in said end walls, and a notch formed in the inner edge of said end core members having an edge formed concentric with the point of pivot of said end wall and an anchor rod adapted to be posi' tioned within said notch and to remain within the mold when the core member is removed, said anchor moving along the arcuate surface of said notch to become freed therefrom.

3. A concrete block machine comprising a supporting standard, a table mounted on said support, a pair of longitudinal flanges extending along the front and back of said table, a pair of supporting members positioned within said table between said flanges, a pallet board having a pair of battens adapted to be positioned adjacent said supports, said pallet board being" of a width equal to the distance between said flanges, and openings formed in th ends of said table to permit of the insertion of the fingers between the pallet board and said table for the removal of the same from the machine.

4. A concrete block machine comprising a supporting standard, a table mounted thereon, a pair of flanges formed on the front and back of said table, pairs of cap screws screwable through said table and projecting above the same, a pair of cross bars mounted on said pairs of cap screws and movable therewith, a pallet board adapted to be positioned between the flanges and resting on said movable bars and means on said pallet board positioned between said bars for bold ing the same from movement within the ma chine.

5. A concrete block machine comprising a base member forming a support adapted to receive a pallet board, side and end walls mounted upon said pallet board, arms formed on said side and end walls and extending downwardly below said pallet board and being pivoted to said base for permitting said side and end walls to swing outwardly and downwardly, a central core member positioned upon said pallet board and V-shaped core members cooperating with said centnl core member secured to said end walls adapted to swing outwardly therewith to free said core members from the mold.

6. A concrete block machine comprising a mold. having a support, side and end walls pivoted thereto, core members mounted on said end walls, said core members having a pair of notches adapted to receive anchor rods, a spring clip positioned within each of said core members attached to said end walls having its ends projecting outwardly adjacent said notches and adapted to engage the anchor rods positioned therein and to vieidingly hold the same in place.

In testimony whereof I afliX my signature.

FREDERICK E. KINSMILLER. 

